25c541269c2c4003e4f8c2e6fa3b3c75cb1e5a46,pandas/core/indexes/period.py,PeriodIndex,asof_locs,#PeriodIndex#Any#Any#,407

Before Change

        locs = self.asi8[mask].searchsorted(where_idx.asi8, side="right")

        locs = np.where(locs > 0, locs - 1, 0)
        result = np.arange(len(self))[mask].take(locs)

        first = mask.argmax()
        result[(locs == 0) & (where_idx.asi8 < self.asi8[first])] = -1

After Change

        elif not isinstance(where, PeriodIndex):
            raise TypeError("asof_locs `where` must be DatetimeIndex or PeriodIndex")

        return super().asof_locs(where, mask)

    @doc(Index.astype)
    def astype(self, dtype, copy: bool = True, how="start"):
        dtype = pandas_dtype(dtype)

Instances